Information processing apparatus and method for reconfiguring the information processing apparatus

A method for reconfiguring an information processing apparatus including partitions to each of which belongs a system board having a processing unit and a control unit, and a system management unit for controlling the partitions, comprising:

• transmitting a register setting request to set a register included in the control unit to a predetermined value to all system boards within the information processing apparatus by the system management unit, when a system board is added to or removed from any of the partitions;
• setting a register of a control unit of the local system board to the predetermined value by the system board that receives the register setting request, if a partition to which the local system board belongs includes the system board to be added or removed;
• and
• ignoring the register setting request by the system board that receives the register setting request, if the partition to which the local system board belongs does not include the system board to be added or removed.